Fuse or like device.



N.1. CONRAD.

FUSE on LIKE nEvma.

APPLICATION FILED APR. I9, IBIS.

1,21 5,491. Patented Feb. 13, 1917.

NICHOLAS J'. CONRAD, OF CHICAGO, ILLINOIS, ASSIGNOB TO CORPORATION OF ILLINOIS.

scnwnn-zn, acum, A

rUsE on. LIKE mavrcn.

speemmn of num ramt. PatentediFeb. 13, 1917.

Application med April 19, 1913. Serial No. 768,248.

To all whom it may concern.'

Be it known that I, NICHOLAS J. CONRAD, a citizen ofthe United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Fuse or like Devices, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to an improvement in fuse or like devices. The principal object of my invention is to provide a fuse or like device which shall present no live parts which may be touched by an operator, and

in which all the metallic parts are inclosed by insulating material.

A further object of my invention is to provide a fuse or like devicehaving a holder or clip which is normally closed, but which may open to relieve interior pressure.

A further object of my invention resides in the particular arrangement and combination of parts hereinafter described.

In the accompanying drawings Figure 1 is a longitudinal sectional View of my improved fuse or like device. This view shows a fuse cut-out held by holders or clips in operating position, the upper part of the cut-out being shown in full lines and the lower part in dotted lines. The inclined dotted lines in this figure show the position of the cut-out when being inserted into the clips or holders, or removed therefrom.

Fig. 2 is a plan view of the lower holder or clip shown in Fig. 1, the cut-out being removed.

In the diil'erent views the same parts are referred to by the same reference numerals.

Referring more particularly to the drawings, l is a slab of marble, slate or similar material, upon which a cut-out device is to be-f mounted, as for instance when used with a potential transformer. 2 2 are porcelain insulators of any convenient style. The insulators 2 2inclose copper connecting rods or pieces 3 3, which project beyond the outer ends of the insulators and are shown in section in Fig. 1. 4 4 are insulating cover pieces of fiber or other suitable material, which are made to it the surface of the parts 3 3 exterior to the insulators 2. As indicated in Fig. 2, the conducting rods 3 and covers 4 aregrooved in a vertical di- .low the disk 8 rection so as to receive cylindrical or tubular cllp members 5 5, which are attached tothe outer faces of the rods 3 3 by means of the screws 6 6, so that parts 3 and 5 are held in good electrical connection Surrounding the metallic cylinders 5 5, previously referred to as clip pieces, are liber cylinders 7 7 which completely inclose the clip pieces except at the point where the cylinders are cut away to afford contact between the clip pieces 5 and the rods 3. The lower end of the lower cylinder or clip piece 5 is closed by a metallic disk 8, while immediately be- A is a fiber diskv9 which screws into the lower end of the cylinder 7 as shown 1n Fig. 1, and serves to retain the plate or disk 8 in place. On the other hand the upper end of the upper fiber cylinder 7 is closed by a Vfiber disk or plate 10 which is shown as hinged to the upper cylinder 7. Plate 10 is thus lightly held 1n position and may ily back to open the interior of the upper cylinder to the atmosphere in case any pressure is generated within the upper cyl- Inder upon the operation of the fuse. It is obvious, however, that various ways might be employed for normally holding the plate 10 in place while allowing it to open the cylinder upon the application of internal pressure. Within the cylindrical clip members 5 5 are mounted a number of metallic spring holding or contact members 11 11 `projecting inwardly. The spring members 1l are attached to the upper member 5 at its lower edge and to the lower member 5 at its upper edge, and run parallel to the axes of the members 5, the upper ends of the upper members l1 and the lower ends ofv the lower members 11 being free to move to allow the springs to accommodate themselves to the position of the cut-out when it is inserted in the clips. The cut-out device shown is indicated by the numeral 12. The cut-out 12 may be of any standard design having-metallic cap or contact pieces 13 13, which contact with the spring members 11.' This lstyle of mounting is however particularly well adapted for use in connection with fuses of the type shown in patents to Schweitzer and Conrad No. 1,135,548 and others which type is characterized by venting of the pressure caused by violent blowing of a fusible member axially of the fuse or cutout. The lower cap piece 13 rests upon 4' The cut-out can then be swung into the metallic plate 8 when the device is in withdrawing a fuse from my improved of clip is markedly different from that ,employed with the present standard form of y cylindrical clip members 5 being 1n longitudinal alinement the axis of the cutout must be inclined to that of the clip members in order that it be inserted or withdrawn, the upper clip 5 and its fiber protector 7 being sufficiently long so that the cut-out may be inserted therein suiicient distance to clear the upper edge of fiber cylinder 7, while in the inclined position.

alinement with the lower clip member and pushed into it, whereupon the spring members 1 1 will hold the cut-out -in an operating posltion.

It will be obvious to those skilled in the art that changes and modifications may be made in my device without departing from the spirit of my invention.

It is particularly evident` that while I have shown my improvedclips in a vertical position that they may be used in a horizontal or inclined position When desired.

Having thus described my invention, what I claim is:

1. The combination of a supporting member, a pair of insulators mounted on said supporting member, metallic rods extending through said insulators, a pair of separate insulating housings axially in line with each other, said housings being permanently secured to the ends of said rods opposite said supporting member, said housings containing metallic contact devices for a fuse device, said contact devices having spring means for yieldinglyholding the fuse dev1ce.

2. The combination of a pair of holders made with sockets to receive the end of a fuse, one of said sockets being closed atits end farthest from the other socket, and said other socket having its end farthest from the first mentioned socket provided with an openable end piece.

3. In combination an insulator, a metallic rod extending through said insulator, a housing of cylindrical form made of insulating material and permanently secured to the end of said rod, and metallic contact devices inside of said housing connected with said rod, said contactdevices comprising spring means projecting from the side Walls of the housing toward the center thereof. and adapted yieldingly to engage a fuse device.

4. The combination of a pair of holders having sockets adaptedto receive the ends of a fuse device, said sockets being arranged one above and substantially axially in line with the other, the other end of the lower i socket being closed and the upper end of the upper socket being provlded wlth a hinged cover.

5. In a fuse-mounting, a socket member of inverted cup-shape, adapted to receive the upper end of a cylindrical fuse device,

and a metallicterminal within said socket for engaging and making contact with the upper ferrule of the fuse device, the closed end of -said socket comprising Va hinged cover, said cover being adapted to provide a ready vent axially in line with a fuse which vents from its upper end.

6. A fuse holding clip comprising in combination, a metallic supporting rod provided With a cylindrical groove in one end,

an insulating cover surrounding said rod near its grooved end, a cylindrical clip member mounted in said groove, and a cylinder of insulation surrounding said clip member and extending beyond the ends thereof, said cylinder being apertured to permit said rod tocontact with said clip member and fitting closely against the. grooved face of said cover.

7. A fuse holding clip comprising in combination, a hollow, metallic member pro- Y vided with interior holding springs, an 1nsulatmg cylinder surrounding said member `and extending beyond the ends thereof, and

a cover for said cylinder movably mounted thereon.

8. A fuse holding device comprising in combination, an insulator, a copper rod mounted within said 'insulator having a cylmdrical groove 1n its outer end, a correspondingly grooved insulating cover plece surrounding said rod, but permitting the tip thereof to project, an insulating cylinder fitted over the tip of said rod engaging the outer groove in said cover piece, a cylindrical metallic clip member mounted within said insulating cylinder contacting with the outer grooved face of said rod, screws uniting said clip member with said rod, and holdlng springs mounted on the interior of said clip member running parallel with the axis thereof. 9. A fuse holding clip comprising in combination, a hollow, metallic clip member, springs mounted within said member running parallel to the axis thereof, an insulating cylinder surrounding said metallic member, a metallic disk closing said clip member at one end, and an insulating disk attached to said insulating cylinder on the outer side of said metallic disk.

10. The combination of-a tubular socket for the endA of a fuse device, said socket being substantially larger than the end of the fuse device which it has to accommodate, and stationary spring cli s projecting inwardly from the' sides Q said socket and holding said fuse device in position and making ycontact therewith, whereby said fuse devicel may be moved or swung to onelside while being inserted or withdrawn.

11.`.The combination of a pair of station-v tors, housings made of insulating materialr and secured at the ends of said rods 3,metallic sleeves inside of said housings, said metallic sleeves bein tact with the ends o said rods 3 which are extended through the walls of said housin and metallic contact springs inside of said` sleeves.

13. The combination of a pair of insulators 2, means for supporting the same, metallic rods 3 extending through said insulators, housings made of insulating material and secured at the ends of said rods 3, metallic sleeves inside of said housings, said metallic sleeves bein secured to and in oontact with the ends o said rods 3 which are extended through the walls of said housings and metallic contact sleeves, said insulators 2 being mounted one above the other and the upper housing bein provided with a cover closing its upper end secured to and incon-y springs inside of sai and the lower housing' being' rovided with a bottom its .lower end? 14. In a fuse mounting, an up r inverted cup-sha socket of relatively shirt length, said soc et ha an opening therein of a diameter substantially la r than the endY of -the fusel to be moun a plurality of spring fingers conver 'ng toward the center of the opening, said gers being connected to a suitable conductor, a lower cup-shaped socket of relatively short length having an opening thereinof a diameter larger vthan the end of the fuse to be inserted, a plurality of spring fingers converging toward the I center of the o g, said fingers being connected to anot er conductor, said sockets being rigidly lmounted axially in line withv their open ends spaced apart a distance less than the length of the fuse to be mounted, said upper spring fingers being suiiiciently yieldable to permit the u per end of the fuse to be inserted at an ang e to the axis of .the two sockets, and the openin in the upper socket being of suicient dept to permit the fuse to be inserted so far that the lower end of the fuse may be brought above the top of` the lower socket.

In witness whereof, I hereunto subscribe -my name this 14th da of A ril A. D. 1918.

, NICH LAS doNRAD.

Ream D. TUnenoN, A. L. JoNns. 

